The 8-bit architecture is a microprocessor or computer architecture that has a datapath width or a highest operand width of 8 bits or an octet. These architectures typically have a matching register file with registers width of 8 bits.

Applications

As a departure from the older 4-bit microprocessors, 8-bit CPUs found their way to many military applications, scientific instrumentation, complex control and processing systems. 8-bit microcontrollers have been used in just about every electrical consumer product.

8-bit microcontrollers still make up the largest group by revenue - accounting for close to 40% of the microcontroller market total revenue in 2015.

8-bit microprocessors

AMD AMD Am9080 Bell Labs BELLMAC-8 DEC DEC LSI-11 Fairchild Fairchild F8 General Instrument GI Series 8000 Hitachi Hitachi 6309 Intel Intel 8008 Intel 8080 Intel 8085

Mostek Mostek 5065 Mostek 6100 MOS Technology MOS 6500 Motorola Motorola 6800 Motorola 6809 National Semiconductor National IMP-8 National NSC800 National SC/MP National SC/MP II NEC NEC V20 NEC V40

RCA RCA 1802 RCA EPIC Rockwell Rockwell PPS8 Scientific Microsystems SMS300 Signetics Signetics 2650 Signetics 8X300 Texas Instruments (TI) TI TMX1795 WD • WD MCP-1600 Zilog Zilog Z80 Zilog Z180

8-bit microcontrollers

General Instrument GI PIC Intel Intel 2920 Intel 8048 Intel 8051 Intel 8751H Intel 8751H-8 Microchip Microchip PIC16

Mitsubishi Mitsubishi M37409 Mitsubishi M58850 Mostek Mostek 3870 Motorola Motorola 6805 National Semiconductor National COP820

NEC NEC μCOM-8 NEC μCOM-80 NEC μPD7800 NEC μPD78K2 Philips Philips 7C522 RCA • RCA 1804 Rockwell Rockwell 6500

8-bit many-core microprocessors

• Rapport
  • Kilocore